Switch from toml back to toml_edit (#738)

Since now toml simply uses toml_edit, there is no reason to continue
using it as it merely increase compilation time and bloat.

Instead, we switch to toml_edit v0.18.0 with feature serde enabled.

This also remove the `CratesTomlParseError::TomlParseNonUtf8` variant
intorduced in #736.

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

Cargo.lock

@@ -247,7 +247,7 @@ dependencies = [
  "serde_json",
  "tempfile",
  "thiserror",
- "toml 0.6.0",
+ "toml_edit",
  "url",
 ]
 
@@ -385,7 +385,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0f1204fe51a1e56042b8ec31d6407547ecd18f596b66f470dadb9abd9be9c843"
 dependencies = [
  "serde",
- "toml 0.5.11",
+ "toml",
 ]
 
 [[package]]
@@ -671,7 +671,7 @@ checksum = "e62abb876c07e4754fae5c14cafa77937841f01740637e17d78dc04352f32a5e"
 dependencies = [
  "cc",
  "rustc_version",
- "toml 0.5.11",
+ "toml",
  "vswhom",
  "winreg",
 ]
@@ -2502,18 +2502,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "toml"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4fb9d890e4dc9298b70f740f615f2e05b9db37dce531f6b24fb77ac993f9f217"
-dependencies = [
- "serde",
- "serde_spanned",
- "toml_datetime",
- "toml_edit",
-]
-
 [[package]]
 name = "toml_datetime"
 version = "0.5.1"